diff --git a/README.md b/README.md
index 4d9a38f..19cc6b6 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ The rust slicer is a rust app powered by the tauri framework. It is currently re
 ## TODO
 
 - [x] Working Program
-- [ ] Use the file format choosen
+- [x] Use the file format choosen
 - [ ] Dummy proof
 - [ ] little website
 - [ ] Port to Windows
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